From 1caf3e4ec86eff182d16238c19356fe2f7e9f118 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 11 Nov 2026 23:17:51 +0000
Subject: [PATCH] Decompile fn_01905
 (DeviceOwnerDX7::CalibrateTextureCoordinates)

Batch #17457 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_01905 DeviceOwnerDX7::CalibrateTextureCoordinates: logic confirmed by peer review

Peer-reviewed-by: Yommy, cremane, bibinir
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
---
 Source/Render/DX7/TextureCalibrationDX7.cpp | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/Source/Render/DX7/TextureCalibrationDX7.cpp b/Source/Render/DX7/TextureCalibrationDX7.cpp
index 3f2ca188d..7db38047f 100644
--- a/Source/Render/DX7/TextureCalibrationDX7.cpp
+++ b/Source/Render/DX7/TextureCalibrationDX7.cpp
@@ -9,7 +9,7 @@
 namespace {
   // INLINED
   unsigned Component(unsigned pixel, DWORD mask, const DeviceOwnerDX7::Channel& channel) {
-    return ((pixel & mask) >> (channel.shift & 31)) << (channel.expansion & 31);
+    return ((pixel & mask) >> channel.shift) << channel.expansion;
   }
 }
 
@@ -23,15 +23,15 @@ bool DeviceOwnerDX7::CalibrateTextureCoordinates() {
   this->device->SetRenderState(D3DRENDERSTATE_ALPHATESTENABLE, 0);
   this->device->SetRenderState(D3DRENDERSTATE_ALPHABLENDENABLE, 0);
   this->device->SetRenderState(D3DRENDERSTATE_ZENABLE, D3DZB_FALSE);
-  this->device->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
   this->device->SetTextureStageState(0, D3DTSS_MINFILTER, D3DTFN_LINEAR);
+  this->device->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
   this->device->SetTexture(0, texture.NativeSurface());
 
+  unsigned first = 0;
   const unsigned columns = this->width >> 2;
   const unsigned capacity = columns * (this->height >> 2);
   int bestScore = -1024;
   int best = 32896;
-  unsigned first = 0;
 
   do {
     this->device->Clear(0, nullptr, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0, 1, 0);
@@ -67,8 +67,7 @@ bool DeviceOwnerDX7::CalibrateTextureCoordinates() {
 
     this->device->EndScene();
     readback.m_surface->Blt(nullptr, this->renderTarget, nullptr, DDBLT_WAIT, nullptr);
-    DDSURFACEDESC2 locked{};
-    locked.dwSize = sizeof(locked);
+    DDSURFACEDESC2 locked = {sizeof(DDSURFACEDESC2)};
 
     if (FAILED(readback.m_surface->Lock(nullptr, &locked, DDLOCK_WAIT, nullptr))) {
       return false;
@@ -122,8 +121,8 @@ bool DeviceOwnerDX7::CalibrateTextureCoordinates() {
 
   g_textureOffsetX = static_cast<float>(best % 256) * (1.0f / 256.0f);
   g_textureOffsetY = static_cast<float>(best / 256) * (1.0f / 256.0f);
-  this->device->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
   this->device->SetTextureStageState(0, D3DTSS_MINFILTER, D3DTFN_LINEAR);
+  this->device->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
 
   return true;
 }